Spinning frame



SePf- 23, 1941- w. s. EASTMAN ET AL 2,257,042

SPINNING FRAME Filed June 4, 1940 Patented Sept. 23, 1941 UNITED STATES naar ortica SPINNING E Walter S. Eastman and` Richard Patterson, Glendale, R. I., assignors toStillwater Worst-ed Mills, a corporation of Rhode Island Application June Il, 1940,-Serial No. 338,791 r1 claims. (c1. isi-130) This invention relates yto spinning frames.

It has among its objects to provide an improved frame of the type wherein the twisting Yprocess is divorced from the drafting process performed by the front rolls and twisting occurs after thea yarn passes off of supplemental pressure means acting on the top frontroll of the drafting mechanism. A further object is to provide an improved pressure mechanism comprising individual pressure means of an improved construction and disposed Vand individually movable in an improved manner on said frame and each cooperating with the Vtop roll of a different set of front rolls. Another object is to .provide such an improved mechanism utilizing pressure rolls and wherein each pressure roll has an exposed free end insuch manner as markedly to facilitate removal of a lap from the same while eliminating the necessity for interfering with the operation of other vrolls or for shutting down l:`

is adapted to operate at `substantially highery I `speeds while enabling a substantial reduction in necessary interruptions and further reducing yarn bre.. [another object of our invention is to provide an improved pressure mechanism ,n nage.

attachment including such an. improved pressure roll and associated pressure mechanism and adapted to be applied to a standard spinning frame with a minimum ofchange therein while enabling the above improved results to be lobtained. These and other objects and advantages of this invention will, however, hereinafter more fully appear.

In the accompanying drawing, one formwhich this invention may assume in practice is shown for purposes of illustration.

In the drawing: l Figure l is a sectional end elevation of a spinning frame equipped with this improvement;

Fig. 2 is a partial front elevation of the same;

Fig. 3 is a sectional view on line 3--3 of Fig-f,

ure l, and f Fig. 4 is a perspective View of the roller carrying end of the improved attachment, the roller being shown separated from its carrying member Y to facilitate illustration.

Y Inj this illustrative construction,` a spinning 'frame of standard construction is shown, including drafting mechanism having on its carriage `stand|,suitable drafting mechanism including usualv fluted lower frontrolls 2 and cooperating cork covered top front rolls 3, as Well as usual closed pigtail guides 4 and usual whirled bobbins 5 disposed under usual caps l;v improved pressure mechanism herein 4being provided and vcooper-'ating with the top front roll 3 to effect twisting and divorce -thesame from the drafting functionof the rolls 2 and 3.

Referring more particularly to the pressure mechanism, it will be noted that an individual pressure mechanism is provided for each set of rolls.2, 3. Of these individual mechanisms,;each

herein, moreover, includes a single pressure roll .'l of l,hard wood or other material having a coefcient of frictionadapting it to cooperate with the cork roll 3, and of substantially the width of the roll 3.and engaging the underside of the latter, so that v.the Apoint at which the yarn passes off of this Vroll 1 is directly above the Center of the guide 4. As shown, this roller 'l `is carried onthe frontend of a rearwardly extending swinging. frame, generally` indicated at F, having a front portion .8 provided with a lateral exten- .sion ,9, Vherein integral andextending through a .suitable aXial bore .lil in the roll 'l'. Also, this -eXten-sion ,9 herein carries on its inner end` a suitable abutment or bearing in the form of alroller or .disci l .spacing the roller 1 from the body of the portion 8. Also, the roll 1 is suitably positioned on the-free end of this arm by a washer and cotterconnection l2.V The. portion Bherein also .extends rearwardly from the roll 1 alongside the uted roll Zand above and across the vshaft thereof.. Herein, this .frame F is also providedvwith a short transverse portion I3 intermediate its ends and suitably fixed, as by welding, to the upper curved surfaceof an elongated semi-tubular bearing member M journalled on a suitable length of round rod I5 weldeditdand extending longitudinally of, the upperedge of the front saddle bar'l. As shown, the frame F also has a rearwardly, extending` portion H disposed substantiallyV in the vertical plane of the rolls 2 and 3 and carrying a suitable-weight i8 on a hook IS on the rear end of `this portion Il.

In the operation of this improved construction, the twisting function isrdivorced from the drafting function of the rolls 2 and 3 and the hard wood pressure roll 'l is pressed'against the underside of the cork 4top roll 3 and rotated sure mechanismsV for each pressure roll, it is also ample, whenra vflap occurs thereon. As a result ofthese-improvements, it is also made pos- !or-fthe scope of the appended claims.

thereby while the yarn is pressed against the bottom of the roll 3, and twisting occurs as the yarn passes off of the rolls 'I in such manner as to produce a continuous twist extending from the latter roll down under the cap 6, while the twisted yarn 5 continuously engages with the entire closed periphery of the pigtail 4, all as is usual in devices of this type. However, herein it Will be observedv that the several rolls 'l Vare all independent of one another, each being carried on its own frame F and independently movable relay tive to the other rolls 1 into and out of operative relation with its cork top roll 3. Further, the end of each pressure roll 'I is exposed in such manner that, should a lap occur, the operator l5 may readily remove the same and reconnect the yarn from this open end of the roll, While the spinning frame continues in operation and without disturbing the operation of any other roll 1. Further, it will be observed that a separate pivoted and weightedfframeli acts to hold each 'roll y"I`1`nress'ed` against the yarn and its r011 3 while enabling'the front end of the frame to' be. depressed readilyy whenever it is desired toobtain access to a lap VAttention is also directed to.25 the fact that vhereinthe extensions 9 on adjacent frames F are' directed toward each other and spaced apart in "such manner as to permit free access between the same to the ends of the lrolls 'I while also permitting an operator to have"3 0 access to either of theseadjacent rolls 1 and thus reducing the number of stations necessary ffor Fthe, operator, while making all Qf the lrolls 1 f readily accessible.

As aresultl of this improvedY construction, it is 35V :made possible, while'obtaining the materially stronger` yarnresulting from the use'of such pressure roll mechanism, also very materially to increase fthe 'possible production j whiley utilizing.

such a mechanism, through reducing the delays lheretofore incident to the use of the same.

Thus, all necessity for shutting down the frame when a1lap occurs is eliminated, at the same timethat, through the improved individual presmade possible materiallypto reduce thel yarn breakage; The improved: arrangement of adjacent rolls'Y 1 Ywithjadiacent exposed ends also markedly facilitates the work of the operator, while the individual pressure-rolls and individual pressure mechanisms Vtherefor also make it unnecessary to Adisturb any other roll when any individual roll Vfl requires` attention as, for exlsible vquite substantially to increase the speed of the -frameas compared `with prior constructions, 'while reducing the^vibration of thelrolls 'l which f tends to break the yarn, Attention is also directedrto theV fact'that the Vonly change required in aV standard Aframe Vis `the `provision `of suitable 'pivots for theswinging frames F, while, if desired, thesemay be preformed on the'frames and thuseliminateall necessity yfor change. These and other advantages of this improved Yconstruction wilLQhowever, be clearly apparent to those skilled irrthe art. l l 'While in this application there is described one embodiment which the linvention may assume in practice, vit will be understood that the same is 7o shown for purposes of illustration'and that the "invention may be modified and embodied in various other forms without departing from its spirit What we claim as new and desire to secure by Letters Patent is:

1. In a spinning frame, drafting mechanism including cooperating front rolls, and an individually mounted pressure mechanism extending between the axes of said rolls and carrying an individually mounted pressure means for pressing the yarn against the top front roll.

2. In a spinning frame, drafting mechanism including cooperating front rolls, andy pressure mechanism including yarn supporting means located in front of the nip of said front rolls, and means including a pivoted frame carrying said yarn supporting means and extending between .the axes of said rolls for actuating said supporting means to press the yarn against the top front roll.

3. In a spinning frame, drafting mechanism including cooperating front rolls, and pressure mechanism for pressing the yarn against the top front roll including a pressure means located in front of the nip of'said front rolls and aY swinging mount having a lateral extension thereon on which said pressure means is carried.

4. In a spinning frame,V drafting mechanism including cooperating front rolls, and pressure mechanism forpressing the yarn against the top front roll including a pressure means in front of the nip of saidv front rolls and a swinging frame pivoted iny rear Vof said front rolls` and carrying said pressure means on its front end.

5. In a spinning frame, drafting mechanism` 4.? rear of the lower roll-fof said front rolls andextending longitudinally alongside the latter and having a lateral extension on its front carrying said pressure means.

'7. In a spinningframe, drafting mechanism Yincluding cooperating front rolls, and pressure mechanism for pressing the yarn against the top front roll including a pres-sure means in front of the nip of said front rolls and a frame pivoted in rear of the lower roll of said front rolls and 5 extending longitudinally alongside the latter and having a lateral extension carrying said pressure means and a rearward extension normally biasingA said roll to' operative position and disposed substantially in the vertical`V plane of said lower roll.

'8. In a spinning device, a frame having a front saddle bar, drafting mechanism on said frame including cooperatingV front rolls adjacent said bar, andv pressure mechanism for pressing the yarn against the underside ofthe top front roll including a pressure means and a supporting frame for said pressure means pivoted on said front saddle bar. a Y

f k9. In a spinning device, a frame having a front saddle bar, drafting mechanism on said frame including cooperating front rolls adjacent said bar, rand`pressure mechanism for pressing the yarn vagainst the underside of the top front roll including a pressure means and'v a supporting 5. frame for said pressure-means vpivoted on said front saddle bar and including a frame member extending longitudinally alongside the lower front roll and having a lateral extension under the top front roll carrying said pressure means.

10. In a spinning device, a frame having a front saddle bar, drafting mechanism on said frame including cooperating front rolls adjacent said bar, and pressure mechanism for pressing the yarn against the underside of the top front roll including a pressure means and a supporting frame for said pressure means having a transversely extending bearing member overlying and pivoted on the upper edge of said saddle bar and frame portions extending in front and rear from said bearing member respectively carrying said pressure means and means biasing the latter into operative position.

11. In a spinning device, a frame, drafting mechanism on said frame including cooperating front rolls, and pressure mechanism for pressing the yarn against the underside of the top front roll including a pressure means and a supporting frame for said pressure means pivoted intermediate its ends on said frame and having said pressure means mounted on its front end and means disposed in rear of the frame pivot biasing said pressure means to operative position.

12. In a spinning frame, drafting mechanism including adjacent sets of cooperating front rolls, separate pressurevmeans in front of the nip of said front rolls and pressing the yarn against the top front rolls, and individually movable pressure mechanisms for said pressure means individually pressing diierent strands of yarn and different pressure means against different top front rolls.

13. In ya spinning frame, drafting mechanism including adjacent sets of cooperating front rolls, separate pressure means in front of the nip of said front rolls and pressing the yarn against the top front rolls, and individually movable pressure mechanisms for said pressure means cooperating with adjacent top rolls and individually pressing different strands of yarn and different pressure means against said different top front rolls including laterally spaced lateral supports for said pressure means extending toward each other and presenting exposed free ends of the latter.

1.4. In an attachment for spinning frames having front drafting rolls, pressure mechanism including a pressure means engageable with the yarn to press the same against the top front roll in front of the nip of said front rolls, and generally horizontally disposed frame means for maintaining said pressure means in operative relation with said top front roll including a frame having a pivot intermediate its ends and having said pressure means and counter-balancing means for the latter at opposite ends of said frame.

15. In an attachment for spinning frames having front drafting rolls, pressure mechanism including a pressure means engageable with the top front roll in iront of the nip of said front rolls, and means for maintaining said pressure means in contact with said top front roll includinga movable frame adapted to be mounted on said spinning frame and having a lateral extension on its front end carrying said pressure means.

16. In an attachment for spinning` frames having front drafting rolls, pressure mechanism including a pressure means engageable with the yarn to press the same against the top front roll in front of the nip of said front rolls, a swinging frame adapted to be mounted on said spinning frame and having a lateral extension on its front end carrying said pressure means, a rearwardly located pivot, and means in rear of said pivot for maintaining said pressure means in operative relation to said top front roll.

17. In an attachment for spinning frames having front drafting rolls, pressure mechanism including a pressure means engageable with the yarn to press the same against the top front roll in front of the nip of said iront rolls, and a swinging frame comprising a rod having a laterally extending portion intermediate its ends and an oppositely extending lateral extension on one end carrying said pressure means, a bearing member on said portion, and means acting on the opposite end of said rodfor biasing said pressure means into operative position against a top front roll.

WALTER S. EASIMAN. RICHARD PATTERSON. 

